redis-smq-common/dist/esm/src/event-bus/event-bus.js

RedisSMQ Common Library provides many components that are mainly used by RedisSMQ and RedisSMQ Monitor.

import { EventEmitter } from '../event/index.js';
import { EventBusNotConnectedError } from './errors/index.js';
export class EventBus extends EventEmitter {
    connected = false;
    constructor() {
        super();
        this.connected = true;
    }
    emit(event, ...args) {
        if (!this.connected) {
            this.eventEmitter.emit('error', new EventBusNotConnectedError());
            return false;
        }
        return super.emit(event, ...args);
    }
    on(event, listener) {
        if (event === 'error') {
            super.on('error', listener);
            return this;
        }
        if (!this.connected) {
            this.eventEmitter.emit('error', new EventBusNotConnectedError());
            return this;
        }
        super.on(event, listener);
        return this;
    }
    once(event, listener) {
        if (event === 'error') {
            super.once('error', listener);
            return this;
        }
        if (!this.connected) {
            this.eventEmitter.emit('error', new EventBusNotConnectedError());
            return this;
        }
        super.once(event, listener);
        return this;
    }
    removeAllListeners(event) {
        if (event === 'error') {
            super.removeAllListeners('error');
            return this;
        }
        if (!this.connected) {
            this.eventEmitter.emit('error', new EventBusNotConnectedError());
            return this;
        }
        super.removeAllListeners(event);
        return this;
    }
    removeListener(event, listener) {
        if (event === 'error') {
            super.removeListener('error', listener);
            return this;
        }
        if (!this.connected) {
            this.eventEmitter.emit('error', new EventBusNotConnectedError());
            return this;
        }
        super.removeListener(event, listener);
        return this;
    }
    shutdown(cb) {
        if (this.connected)
            this.connected = false;
        cb();
    }
    static createInstance(cb) {
        const instance = new EventBus();
        cb(null, instance);
    }
}
//# sourceMappingURL=event-bus.js.map